Hydrocarbon-oil burner



Jul .1 1924. 1,499,355

(3. E. ECKERLE HYDROCARBON OIL BURNER Chrome Patented July 1, 1924.

UNITED STATES CHARLES E. ECKEBLE, or BIRMINGHAM, ALABAMA.

HYDROCARBON-OIL BURNER.

Application filedsepteniber 29, 1922. Serial No. 591,261.

To all whom it may concern: v

Be itknown that I, CHARLES E. ECKERLE, a citizen of the United States of America, residing at Birmingham, in the county of '5 Jefferson and State of Alabama, have invented certain new and useful Improvements in .Hydrocarbon-Oil Burners, 1 of which the following is a specification.

My invent-ion relates to hydrocarbon oil burners of the type. adapted -to.burn.kero.

sene and the lighter grades of-fuel oil. 1 The objects of my invention are to improve the operation of the. burner by elongating the mixing. passages through which the air and oil flow to the burner chamber, such passage .being effectually protected from the direct action of the flame to avoid overheating and back firing;

relates to the arrangement ofthevaporizer relative to the burner ports to protect the former from excessive heat and reduce to a minimum the trouble of carbonizations A further novel feature of my invention relates to. the vaporizer and to means there.- in for effecting such a flow of. the oil as will result in a minimum. of 'carbonization while insuring a vaporization which is rapidand ample in volume so as to enable. the burner tocome rapidly intoiservice. A further feature relates to the provision of means to catch and collectthe carbon which are readily removableand replaceable so that the burner canbexkept-in operating condition with small expense and but slight trouble. r My invention further comprises the. novel features of, construction and arrangements of parts,which in their preferred embodis ing drawings, .in which *ig. 1 is a side elevation of my improved burner complete. Y

Fig. 2 is a sectional view takenon the line 2-2 of Fig. 4. I I, Fig. 3 is an enlarged cross-sectional View through the vaporizer. Y K Fig. 4 is a cross-sectional view taken on J: theline l-l of Fig. 2. r t

Fig. 5 is a plan View ofFig. 1.

Fig. 6 is a CIOSS-S6Ct1OI12ll. Vl8W of amodified form of vaporizer.

Similar reference numeralsrerer to similar parts throughout the drawings.

.A further novel feature of ;my.invention ment only are illustrated in the accompany ly I heated.

In the preferred embodiment of my invention illustrated, the burner comprisesa base castmg having'legs l terminating at their upper ends in seats 2 extending along each side of the burner and havinga lip 3 alongthelr outer edges and a wall arising from their inner edges. The wall 4; on one side'joins an overhead wall 5 and on the other slde joins a concave wall 6. In the center of thetop wall 5 I cast bosses 7, each having a threaded opening tapped therein toreceive the screw 8, by means of which the outer burner shell is mounted in assembled position on the base. This burner shell comprises a convex top portion 9 slightly less in length than the base and provided at each I end with clown-turned flanges 10 which are forced between the end flanges 11 on the base, it being noted that on each end of the, curved wall 6 is provided a shoulder 12 symmetrical with the ,wall 5 on which the flange .10 rests. .This

flange 10 also extends down alongthe side walls 13 of the burner shell which are.

curved wall 6 is'provided an indentation in the castlng formlng an 011 groove ll adapted'vto receive thepriming oil for heating the vaporlzer 15. -The vaporizer is shown mounted in end walls 16;cast integral with the burner shell and disposed at each end of the groove 14. The vaporizer is preferably held in place by metal strapsg17 which at one end are attached to the shell by the adjacent screw-8 and'at the other end, after being passed over the vaporizer, are con- 1.,

nected to the outer side of the end walls 16 by screws 18.- This brings thevapjorizer to one side of the burner which is provided with a series of burner slits 19 (see Fig. 5) extending adjacent to thegroove 14 to a point adjacentto the opposite side of the topl'wall 9. In addition to, this I provide burner slots 20 in each sidev wall 13, it being noted thatthe vaporizer-in being ofi'set inwardly from the burner slits adjacent to it will not receive the direct action of the flame and will not tend to become too high- I' cast integral with the base a mixing chamber in tubular form having a reverse base casting.

bend, the chamber at its lower end is con nected to a cross web 21 connected to front legs 1 ofthe'burner and extending upwardly approximately to thelevel of the seats 2. On this wall the mixing chamber comprises first a chamber 22 having a bottom opening23 for the admission of air and having a wall 24 set opposite the web 21. The wall21 isprovided with an opening 25 to receive with a snug fit the burner nozzle 26, and in the wall 25 opposite to and in alignment with the "opening 25 is a corresponding opening-27 The hydrocarbon oil, preferablykerosene,

is suppliedthrough a duct 33 to a plug '34 screwed into the tubular vaporizer shell 15. This plug is provided'with a duct 35-registering with theduct 33 and enlarged at its inner end 36 to form a guide for thestem 37 on a disk 38 which fits snugly with a small clearance in the-bore of the 'tube 15.

The stem37 in like manner fits with a close clearance in the duct 36 and tends to re-.

strictthe flow of the oil therethrough. I I indent the tube 15 at severalpoint's, asindi- 'ca'ted-at 39, soas to form shouldersto limit the inward movement of a cylinder 40"ot carbon, or any like suitable material, which is introduced intothevjapvorizer infront of the disk 38. The vaporizer is screwed into a T-fitting 41 with its inner end registering with the inner open endot' a shell 42 and closed at its outerend and threaded into the T-fitting with a wrench grip 43. "The shell i is providedcircumferentially with a series of ports 44' and has mounted therein a wire mesh sleeve 45 closed at its inner end and adapted to receive and collect the carbon formed in the vaporizer. V It'will be observed that the shell is surrounded'between its ends with a clearance chamber 46 so that the-gas escaping through the ports 44 surrounding the sleeve, as indicated by the arrows, passes downwardly through the fitting connection 47 and enters the burner nozzle 26, whence itis discharged under con trol of the needle valve 48 into the chamber2 2. V I V V V I l I show in Fig. 6 a modification of my vaporizer wherein the carbon cylinder 40* is provided with an enlarged shoulder '38 corresponding in diameter 7 tot-he metal disk 38 so as to take the place of the latter.

Under such conditions the enlarged inner port 36 in the plug can be eliminated and the restricted duct 35 carried all the way through the plug. This construction is simpler and less expensive, especially where themolded carbon shapes are available.

Having assembled the parts in the manner described, the operation is as follows.

' The oil flowing under suit-able pressure through the. ducts 33 and 35 is restricted by the stem 37 and in small volume passes into the vaporizer in front of the disk 38 or shoulder 38*. The disk 38 will drop closer to the bottom of the vaporizer shell 15 than to any other part and will allow only a very restricted flow of oil to escape about it like an annulus, which condition is preserved as the oil flows lengthwise about the carbon cylinder .40. As a result the oil is maintained in a very thin substantially annular space and is readily vaporized, the

oil vapors flowing through the screen 45 and escapingthrough the sleeve ports44, and flowing down through the tube 47 to the burner nozzle 26,.thencethey escapeas a jet'under control of the needlexvalve 48 into the mixing chamber 22. In traversing this chamber the gas jetentrains air and the mixed gas and air fiowthrough port 27 into the lower mixing chamber and thence by the reverse bend through theupperrnixing chamberand int'o'the distributing chamber between the walls 4 and -5 onione side and 9 and 13 on the other. In-this chamber the gas escapes through the slots 19 and 20 and burns above and on each side of the burner to aitord an efiective well distributed flame. When starting the'burner, the groove .14 is filled with priming oil and this .is ignited to heat the vaporizer until the burner starts. As the oil tends to vaporize during the starting up of the burner 'it will condense .and col'lectin the Ipocket 32 whence it will belaterivaporized asthe burner heats up. The burner will not back fire and will givecontinuous uniform 'heatwith a relatively low pressure of oil and with verylittle trouble from:carbonization, which, when it occurs, can be readily corrected by .unscrewingthe sleeve 42 and cleaning thelplug and its wire screen 45.

Though I have described with great particularity the details of -thei embodiment of the invention herein shown, it isnot to be construed that I am. limited thereto as changes in arrangement and substitution of equivalents may be madeby those skilled in the art without departing from the invention as defined in the appended claims; 7

Having thus described my invention, what I claim as new and desire to secure Letters :Patent, is 5 I 1 1. In aburner, an arched"l1ol low}shell, a

mixing chamber opening into the space arch of the shell and having a reverse bend therein to elongate it, external burner slots in the shell, a Vaporizer, and means to admit a regulable volume of gas and air into said mixing chamber.

2. A burner in accordance with claim 1, in which said reverse bend of the mixing chamber is spaced from and protected from reflected heat by the side walls of the burner arch.

3. A burner in accordance with claim 1, in which the burner slots are arranged along the sides and top of the shell, an oil groove being provided along one corner of the shell, and a vaporizer mounted longitudinally over said groove and protected thereby from direct contact with the flames.

A. In a burner, an arched base casting having integral therewith and disposed within the arch a mixing passage formed with a reverse bend and opening centrally through the top of the base casting, means to introduce air and gas into the intake end of said passage, a vaporizer to supply the gas, and an outer arched burner jacket seated on the base casting and forming an arched gas chamber with an oil groove under the vaporizer, there being burner slots in the outer sides and top of said jacket.

5. A burner in accordance with claim 4, in which the vaporizer is mounted at one side in position to avoid direct contact from fllames from the adjacent side and top burner s ots.

6. In a burner, an elongated arched hollow base casting'having a reverse bend mixing passage cast thereunder in spaced relation to its side walls, said passage having a bottom air inlet at its intake end and having its discharge end opening upwardly through the middle of the casting, a jacket mounted on the base casting with its intermediate portion spaced therefrom and hav-- ing burner slots in its sides and top, means to mount a vaporizer along one corner of said jacket, and valve controlled means to discharge gas from said vaporizer in the form of a jet flowing above said air. inlet into'said mixing passage.

In testimony whereof I aflix'my signature. f

CHARLES E. ECKERLE.

Witness: NoMIE WELSH. 

